Ol Pet aging fur pattern

Maybe someone can help me.. I searched some mod what disable or make less visible the old pets fur change especially the pet nose and mouth area but so far nothing.. I mean what the hell... When my cat aged he turned completly different Whit this fur patter change .. If they turn a littlebit older some grey or white its ok but this is too much for me .
Anyone know a mod for this or can make it one for me?  PLZ very important X)